Dongguan Chipsen Electronics Technology Co., Ltd.
| Output Power Range | 100 W – 300 W (topology dependent) |
| Operating Frequency | 20 kHz – 150 kHz (typical) |
| Payment Terms | T/T |
| Withstand Voltage | Hi-Pot 3000 VAC / 1 min |
| Insulation Class | Class B (130 °C) / Class F (155 °C) |
| Supply Ability | 10,000,000pcs/month |
| Wire Type | Enameled copper wire / TIW (Triple Insulated Wire) / Litz wire |
| Delivery Time | 3~4 Weeks |
| Input / Output Voltage | Input AC 110 V / 220 V; Output 5 V / 12 V / 24 V / 48 V (customizable) |
| Certification & Compliance | RoHS & REACH compliant; UL / VDE recognized materials; ISO 9001 / IATF 16949 |
| Core Material | MnZn Ferrite — PC40 (PC44 / DMR44 optional) |
| Packaging Details | Carton 1: 25.5 X 21.5 X 21cm. Carton 2: 43.5 x 24.5 x 21 cm |
| Application | Smart home power system, SMPS, LED driver, DC fast charging, AI rack power, PV inverter, OBC, UPS |
| Bobbin & Pin Configuration | Vertical 6+6 pins; Bobbin 45.4 × 36.8 × 19.8 mm, pin pitch 5.0 mm, parallel distance 39.0 mm for reference |
| Certification | ISO9001:2015, ISO14001:2015, IATF16949, UL/cUL, ROHS, REACH, CQC |
| Model Number | EQ40 |
| Brand Name | Chipsen |
| Place of Origin | China |
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Product Specification
| Output Power Range | 100 W – 300 W (topology dependent) | Operating Frequency | 20 kHz – 150 kHz (typical) |
| Payment Terms | T/T | Withstand Voltage | Hi-Pot 3000 VAC / 1 min |
| Insulation Class | Class B (130 °C) / Class F (155 °C) | Supply Ability | 10,000,000pcs/month |
| Wire Type | Enameled copper wire / TIW (Triple Insulated Wire) / Litz wire | Delivery Time | 3~4 Weeks |
| Input / Output Voltage | Input AC 110 V / 220 V; Output 5 V / 12 V / 24 V / 48 V (customizable) | Certification & Compliance | RoHS & REACH compliant; UL / VDE recognized materials; ISO 9001 / IATF 16949 |
| Core Material | MnZn Ferrite — PC40 (PC44 / DMR44 optional) | Packaging Details | Carton 1: 25.5 X 21.5 X 21cm. Carton 2: 43.5 x 24.5 x 21 cm |
| Application | Smart home power system, SMPS, LED driver, DC fast charging, AI rack power, PV inverter, OBC, UPS | Bobbin & Pin Configuration | Vertical 6+6 pins; Bobbin 45.4 × 36.8 × 19.8 mm, pin pitch 5.0 mm, parallel distance 39.0 mm for reference |
| Certification | ISO9001:2015, ISO14001:2015, IATF16949, UL/cUL, ROHS, REACH, CQC | Model Number | EQ40 |
| Brand Name | Chipsen | Place of Origin | China |
| High Light | 15A planar transformer ，EQ40 planar transformer ，DC Converter high power planar transformer | ||
The EQ40 High Frequency LLC Planar Transformer is a low-profile, 15A high-current magnetic component engineered for DC-DC converters and LLC resonant topologies. Built on an EQ40 ferrite core with copper foil windings instead of conventional round magnet wire, this planar transformer delivers a flat, space-saving profile with excellent thermal performance — ideal for power designs where board height is the most constrained dimension.
Manufactured under a UL Recognized file (No. E332338), each unit features a shielded metal housing and epoxy potting at the base for mechanical stability, EMI suppression and vibration resistance.
| Feature | Benefit to Your Design |
|---|---|
| Copper Foil Winding | Lower AC resistance, reduced skin and proximity effect at high frequency; higher current density in a smaller footprint |
| Low Profile Planar Structure | Fits 1U power shelves, slim adapters and high-density DC-DC modules where height is limited |
| EQ40 Ferrite Core | Larger effective cross-section than EQ28 / EQ33 — supports higher throughput power with stable inductance |
| Optimized for LLC Topology | Controlled leakage and magnetizing inductance for soft-switching (ZVS) efficiency |
| Shielded Metal Housing | Suppresses EMI radiation and improves thermal dissipation |
| Epoxy Potting Base | Protects terminations against vibration, moisture and mechanical shock |
| UL Recognized (E332338) | Verifiable file number that simplifies your end-product safety approval in North America |
| PCB Through-Hole Flat Pins | Robust mechanical mounting and low contact resistance for high-current paths |
| Parameter | Specification |
|---|---|
| Model No. | MTEQ40-450-17235 |
| Core Type | EQ40 |
| Core Material | MnZn Ferrite |
| Winding Type | Copper Foil |
| Rated Current | 15 A |
| Operating Frequency | 100 kHz ~ 500 kHz |
| Output Power | Customised |
| Primary Inductance (Lp) | Customised |
| Leakage Inductance (Lk) | Customised |
| Turns Ratio | Customised |
| DC Resistance (DCR) | Customised |
| Hi-Pot (Withstand Voltage) | Customised |
| Insulation Class | Class B / F / H |
| Operating Temperature | -40 °C ~ +125 °C |
| Dimensions (L * W * H) | Customised |
| Mounting Type | PCB Through Hole |
| Certification | UL Recognized Component, File No. E332338; RoHS Compliant |
| Customization | Turns ratio, inductance, pin configuration and housing available to your drawing |
Yes. Turns ratio, primary and leakage inductance, pin configuration and housing can all be built to your specification. Please provide your drawing or converter parameters.
Copper foil reduces AC resistance caused by skin and proximity effects at high frequency, allowing higher current handling in a lower-profile package with better heat spreading.
Planar construction gives highly repeatable leakage inductance from unit to unit, which is critical for LLC resonant tanks, while the low profile suits high-density board layouts.
Yes. This transformer is produced under UL File No. E332338, which can be checked directly in the UL online certification directory.
Company Details
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
28820000-29820000
Employee Number:
400~450
Ecer Certification：
Verified Supplier
Chipsen Electronics - Supplier to Fortune Global 500 Companies Magnetic Components Engineered for Performance & Reliability Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches. ... Chipsen Electronics - Supplier to Fortune Global 500 Companies Magnetic Components Engineered for Performance & Reliability Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches. ...
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